cok La | 
BUD VARIATION IN THE LISBON LEMON. 5 
TaBLeE 1X.—Diameter of rings used in picking fruits of the Green grade from the lemon 
trees of the Lisbon variety in the investigational performance-record plat during the 
4-year period from July, 1913, to June, 1917, inclusive. 
| Diameter of picking ring for Diameter of picking ring for 
Green-grade fruit (inches). Green-grade fruit (inches). 
Month. Month. meee 
1913-14 | 1914-15 | 1915-16 | 1916-17 1913-14 | 1914-15 | 1915-16 | 1916-17 
LL Rieger or 235 285 235 229 || January .------.- Qos 245 235 233 
August aS Oba ac 28; ay 285 220) | ebruaL Ye. -<sok Deer ee 235 219 
September....--- 20 255 219 22 OR Marcher 219 210 219 239 
Octoberae 22.2. 229 Fatt 2Eo 5 OMG. ol HABA EAP Ee aBaal aces aace| Nosmocies OES ioe h 2 22 
November....---|. palate 21$ 233 Pay IP Mlb Ryeeeceacoobos= 225 239 219 Qs 
December ....--- yee 220 2re Oe chee weaaneemsoesce Pe Due 22S 28; 
In figure 7 the data are rearranged to show more clearly the varia- 
tions between the various strains during the different months. The 
differences would be best illustrated by representing the production 
for each strain by a curve, but on account of the nature of the resulting 
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Fia. 8.—Diagram showing the percentage of the total crops of fruit of Lisbon lemons of the Green grade 
which were produced each month by the trees of the Lisbon, Bull, and Open strains in the investigational 
_ performance-record plat during the 3-year period from July, 1914, to June, 1917, inclusive. 
curves it was impracticable to represent them all clearly on a single 
small-sized chart. In figure 8 are shown curves for the monthly 
production of the Green-grade fruit from the trees of the Lisbon, 
Bull, and Open strains, illustrating their variations during the sea- 
son of heaviest bearing. | 
